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Merge pull request #10818 from Pokechu22/icache-always-invalidate 

PPCCache: Always invalidate on icbi, even if icache is disabled
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Tilka 2023-11-27 10:15:05 +00:00 committed by GitHub
parent eba2b9ab9c 2f4a3d6f60
commit ff6ea89036
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1 changed files with 7 additions and 4 deletions
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11
Source/Core/Core/PowerPC/PPCCache.cpp
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@ -419,11 +419,13 @@ void InstructionCache::Invalidate(u32 addr)
{
auto& system = Core::System::GetInstance();
auto& memory = system.GetMemory();
auto& ppc_state = system.GetPPCState();
if (!HID0(ppc_state).ICE || m_disable_icache)
return;
// Invalidates the whole set
// Per the 750cl manual, section 3.4.1.5 Instruction Cache Enabling/Disabling (page 137)
// and section 3.4.2.6 Instruction Cache Block Invalidate (icbi) (page 140), the icbi
// instruction always invalidates, even if the instruction cache is disabled or locked,
// and it also invalidates all ways of the corresponding cache set, not just the way corresponding
// to the given address.
// (However, the icbi instruction's info on page 432 does not include this information)
const u32 set = (addr >> 5) & 0x7f;
for (size_t way = 0; way < 8; way++)
{
@ -440,6 +442,7 @@ void InstructionCache::Invalidate(u32 addr)
valid[set] = 0;
modified[set] = 0;
// Also tell the JIT that the corresponding address has been invalidated
system.GetJitInterface().InvalidateICacheLine(addr);
}